The card features a trio of bouts with top welterweights, though the focus is on the five-round title fight.

St-Pierre and Diaz originally were scheduled to fight in October 2011 at UFC 137, but Diaz no-showed a pair of promotional appearances and was pulled from the bout. In an odd twist, he was later placed back on the card and defeated B.J. Penn after St-Pierre was forced to withdraw from the event with a training injury. Diaz took the opportunity to call out St-Pierre.

“There’s a lot of animosity,” St-Pierre said. “I’m the one who’s got the belt. I’m the one who has the title. That’s why they tried to pick a fight with me.”

In addition to the PPV main card, the 13-bout lineup also includes prelims on FX and Facebook.

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